Fredrick a



(No Modl.) u

'I'. A. ASWA-N 81; C. B. BOSWORTH. GUT OUT IOlI DANGBRGUS BLEGTBIC GURRENTS.

vfN'o. 274,150. Patented Mar. 20.1883.

UNITED STATES gPATENT OFFICE.

FBEDBIOK A. SVS/AN AND CHARLES B. BOSWORTH, OF BOSTON, MASS.

CUT-OUT FOR DANGEROUS'ELECTRiC CURRENTS.

SPECIFICATION forming part of Letters Patent No. 274,150, dated March 20, 1883.

Application tiled July 1, 1882.

To all whom it may concern:

Beit known that, we, FEEDEICK A. SWAN and CHARLES B. BoswoE'rH, both of Boston, in the county of Suiolk and State of Massachusetts, have invented a new and usetul lmproved Out-Out for Dangerous Electric Ourrents, of which the following is a specification.

Our invention relates to that class of cutouts in which it-is desirable to cut out the wires of a single light, and not to interfere with the current on the main line, the object being to place the operating` device within easy reach, and `yet to have no currentwires in any easily accessible position, so that there need be no dangerous electricalcurrents in any place likely to be occupiedinadvertently. This object we attain by the mechanism illustrated in the accoinpauyine,t drawings, in Which- Figure lis a diagram illustrating,` our devices, and Fig. 2 shows the saine in part, the movable part of the cut-out being,` represented in the position which it occupies when the light and its wires are cut out of circuit.

B represents an electric light of ordinary l construction supplied with circuit-wires B B3,

which connect with the binding-posts B B2.

The wires L and L2 are the line-wires, which connect with the binding-posts L L3, one ot' which is connected by a spring-plate, S', to an insulated bed-plate, C, while the other, L3, is connected by a spring-plate, S, to the insulated bed-plate C. ihe bed-plates G and O are shaped as shown, and attached to a block, E, which slides in the bed-piece A. The block E is held in position by the hookpawl H, which engages with the projection E. The spring` F is at tension, one end being fast to the sliding block E, while the other is fixed to the bed-piece A, so that the tendency is to cause the block E to slide in the direction ot the arrow R when released trom the hoolipawl H.

The motion of the hook-pawl H is controlled by the electro-magneti, acting through the armature H, the electro-magnet M being charged by the wire D (connected to the lightwre B3) and the wire D', contact-breaker D6 D D4 D3, and wire D2, (connected to the lightwireB.)

(No model.)

Vhen the contact-breakeris open, as shown in the drawings, the current passes to the light and does not affect the magnet M; but if the contact at D5 DG is made the magnet M acts and withdraws the hook-pawl H, thus releasing the block O and allowing' it to be drawn by the spring' F, so as to occupy the position shown in Fig. 2.

The operation of our device is as follows: Vhen it is desirable to have the light and its wires B anti B3 in circuit, the cut-out device is in position shown in Fig. 1, in which case the current passes from the line wire L2, through post L3, spring-p'ate S, bed-plate O', s1.)ring-plate S2, post- B, and wire B', to light; then, through wire B3, post B2, spring-plate S, bed-plate O, spring-plate S, and post L', to line-wire L.

To out out the lightand its wires B B3 it is necessary to close the contact in the breaker at D5D. This action will cause the magnet M to act and withdraw the hook-pawl H, thus releasing; the sliding` block E and allowing` it to assume the position shown in Fig. 2, in which case the spring-plates S2 S3 and lightwires B B3 are disconnected, while the springplates S S are connected and the line-circuit is complete. f

The cut-out device U C should be put inv such a place as to insure it and the connecting line and light wires i'roni being,` liable to be touched inadvertently; but the contactbreaker maybe placed in any convenient place easily accessible to any person who may want to cutout the light and its wires.

fe claim- 1n an electric-circuit cut-out device, the coinbination ot' the light-wires B B3 and the cutoli' wires D2 D D with the cut-out mechanism (consisting,r of the electro-magnet M, catch H, switch block E, and spring F) and circuitbreaker, all operating together substantially as described, and for the purpose set forth.

FBEDRICK A. SWAN. CHARLES B. BOSWORTH.

Vitnesses HELEN M. FEEGAN, FRANK G. PARKER.. 

